COM_STMT_EXECUTE (bulk) returns error on INSERT .. SELECT ....

>>> cursor.execute("insert into t1 select NULL, ?", (54,))

>>> cursor.rowcount

1

>>> cursor.executemany("insert into t1 select NULL, ?", [(55,),(56,)])

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

  File "/usr/local/lib/python3.9/site-packages/mariadb-1.1.0b1-py3.9-linux-x86_64.egg/mariadb/cursors.py", line 322, in executemany

    self._execute_bulk()

mariadb.OperationalError: This command is not supported in the prepared statement protocol yet